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https://issues.apache.org/jira/browse/PDFBOX-4691?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andreas Lehmkühler closed PDFBOX-4691.
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> JPEGFactory should not decode JPEG files when only meta data is needed
> ----------------------------------------------------------------------
>
> Key: PDFBOX-4691
> URL: https://issues.apache.org/jira/browse/PDFBOX-4691
> Project: PDFBox
> Issue Type: Improvement
> Affects Versions: 2.0.17
> Reporter: Tilman Hausherr
> Assignee: Tilman Hausherr
> Priority: Major
> Labels: optimization
> Fix For: 2.0.18, 3.0.0 PDFBox
>
>
> {{JPEGFactory.createFromByteArray}} calls {{JPEGFactory.readJPEGRaster}} to
> get the (decoded) raster although only meta data (size and number of data
> elements) is needed. This should be optimized so that only the meta data is
> used, if possible. The current behavior should be kept as fallback.
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